1[2]Beler-Baykal B,Guven D A,Performance of Clinoptilolite Alone and in Combination with Sand Filters for the Removal of Ammonia Peaks from Domestic Wastewater.Water Sci.and Technol.,1997,35:47-54
2[3]Booker N A,Cooney E L,Priestly A J,Ammonia Removal from Sewage Using Natural Australian Zeolite.Water Sci.and Technol.,1996,34:17-24
3[4]Shin-Jyung K,Kazuhiko E,Akira Y,Transformation of a Low-Grade Korean Natural Zeolite to High Cation Exchanger by Hydrothermal Reaction with or without Fusion with Sodium Hydroxide.Applied Clay Science,1998,13:117-135
4[5]Ames L L,The Cation Sieve Properties of Clinoptilolite.The Am.Mineralogist,1960,45:689-700
5[6]Jorgensen S E,Libor O,Graber K L et al.,Ammonia Removal by Use of Clinoptilolite.Water Res.,1976,10:213-224
6[7]Howery D G,Thomas H C,Ion Exchange on the Mineral Clinoptilolite.J.Phy.Chem.,1965,69:531-537
7[1]Hlavay J,Vigh G,Olaszi V et al.,Investigations on Natural Hungarian Zeolite for Ammonia Removal.Water Res.,1982,16:417-420
